Insole-lip-sewing machine.



E. JOHNSON INSOLE LIP SEWING MACHINE.

APPLICATION FILED JAN. 14, mo

Patnted Mar. 10, will Z SHEETSMSHBET 1.

A El, f0H\SOl\1`l msm@ LIP :SEWING MACHINE.

APlLlGATlON FILED JAN. 14, IMU.

Patented Mar. l0, 1914..

2 SHEETS-*SHEET 2.

TED Silr'llES PATENT FFICE. u

ALBERT E. JOHNSON, OF IBIEIiJRLY, MASSACHUSETTS, ASSIGNOR TO UNITED SHOEMACHINERY COMPANY, OF PAIERSON, NEW' J'ERSFV- A CORPORATION OF NEWJERSEY.

Specification of Letters Patent.

INSOLE-LIP-SEWING MACHINE.

raient-ed Mar.. io, i914.

Application tiled January 14, 1910. Serial No. 538,087.

To all whom 'it may concern Be it known that I, ALBERT E. JOHNSON,

. a citizen of the United States. residing at l Vto sewing machines forforming what are known commercially as Economy insoles.

ln. forming the Economy type of insole the blank is treated by slittingits face to 'form a channel and by slitting the edge to t'orm a feather,these operations producing two independent, contiguous flaps' atthemargin of the blank. The two flaps thus formed arc turned up from thechannel and the feather and secured together to form a single, compoundlip. Thereafter reinforcing fabric, such as canvas, is applied to thetace of the insole and tothe lip.

The present invention contemplates an improvement in the formation otinsoles of the general character described and relates particularly tothe step of bringing the channel and feather tlaps together to form asingle, compound lip. Heretoforc the tivo flaps have been securedtogether either by cement or by a line of stitches formed in the usualmanner by means of Well-known stitch Jforming mechanism in sewingmachines-suitably modified to adapt them to this part-icular class ofWork.

The object of the present invention is to modify and adapt the domesticWillcox & Gibbs, or similar type of sewing machine, to sewing togetherthe lips of EconomyT and other combination insoles.

ln accordance with this object one feature of the invention comprises awork supporting guide or positioning device adapted to bear on the grainside, or unchanneled sur- -tace, of the insole, so constructed andarranged that when the insole is presented to the machine with one ofits iiaps resting on a work table shaped to accommodate` it, the twoupturned flaps will be held, throughout the operation, in such relationto the stitch forming mechanism as to properly receive the stitches. Theguide is preferably in the form of a roll to exclude 4frietionand somounted that the space above and in front ot' the Work table isunobstructed, thereby permitting the, 'insole readily to be inserted andremoved and providing for its free and easy manipulation during thestitching operation. The axis of rotation of the roll is oblique to theplane of the work table thereby permitting the insole to be flexed out-Wardly to clear the working parts above the Work table during its feedthrough the machine. Means is provided to Withdraw a guide, so mounted,from its engagement with the insole at Ithe time the presser-foot islifted to further assist the operative in insertingthe insole in workingposition and rermoving it therefrom. The preferred mannerotaccomplishing this end is by controlling the movement of thepresser-foot and guide from a single actuator. The feature oi theinvention just described is not to be understood as limited to use in asewingn` machine of the Willcox & Gibbs type, as

illustrated, as it is applicable to any sewing machine adapted to securetogether the flaps of insoles.

The necessary change in the size of the Work table 1n order to properlyaccommodate and position the insole flaps places the marginal portion ofthe insole, when inl working position, somewhat in the path of therotary thread hook or east-oit forming a part of the stitchformingmechanism."` A 'further feature of the invention consists in theprovision of a guard plate orcap inclosing the upper portion of the pathof the thread hook thus effectively housing it and preventing itsengaging' and injuring the insole in the operation of the machine orinjuring the hand of the operative.

In order to provide for an engagement of the feeding foot with the baseof the lip of the insole, the foot is lightened to a considerable extentand arranged to operate at the outer edge of the Work table. In such alocation there is liability ofthe feed foot engaging the edge of theinsole, on the upstroke of its four-motion feed, instead of the, base ofthe flap unless means is provided t insure aproper engagement of thefeed foot with the Work.

In accordance with a further feature!v of shaft whenever work isremoved, at each revolution of the shaft, the feed foot will engage andlift tlie-presser-foot arranged just above and in opposition thereto.Such an engagement is particularly injurious to vthe feed foot soonlwearing it out andy re-J jrruiring its replacement. Also, "in a ma- ,fchine designed to sew together the two flaps of insoles with the feedAfoot lightened to the extent necessary to cause it to act properly onthe insole i'iap, its Strength is considerably weakened and in additionto the excessive wear an injurious strain would be placed upon it wereit permitted to engage and lift the 'presser-foot in the manner justdescribed..

An important characteristic of the invention is found in the provisionof a device to prevent contact of the feed foot with the presser-footwhen the machine is running without work. Such a device may convenientlycomprise 'a stop mounted von the presser-foot bar and arranged to beengaged by the feed foot bar and cause the presserfoot to he held out ofcontact with the rising feed foot, thereby eifectually preventing anycngageinent of the feed foot and presserfoot. The stop 'may be adjustedso that it will not interfere with a proper operation of the feed footwhen work is in the machine. This feature of the invention is notlimited in the scope of its application to a sewing machine modified tosew the lips of insoles but in its broader' aspect is applicable to anysewing machine of the general type described.

@ther features4 of the invention relate to certain devices, combinationsand arrangements of parts hereinafter described and claimed, whichpossess advantages of construction and operation that will be apparfntto those skilled in the art.

" The preferred embodiment of the invention is illustrated in theaccompanying Loaders is a detail, in section, of the feed-foot and itsbar taken on the line 4 4, Fig. 3; and Fig. 5 is a detail of the presserfoot showing it in side elevation, bottom plan and transverse section onthe line f In the embodiment of the invention illus- `trated'in the.drawings, the lVillkcoX & Gibbs sewing machine there shown 1s provided]with the usual stitch forming mechanism im.

cluding a straight eye-pointed needle 2 and a rotary thread hook orcast-off 4. The thread hook is rotated by being mounted directly uponthe driving shaft, 6 and the needle bar is reciprocated, in guides `onthe frame, by the\ oscillations of a pivotally mounted lever 8 actuatedfrom an eccentric on the drivin shaft 6, all as usual. A fourmotion feedoot l0 is vcarried by a feed bar 12 (see Fig. 4,) which is pivoted at 14to the machine frame and operated in the usual manner by a crank on thedriving shaft which operates within a slot 16 at the free end of thefeed bar. A presser-foot 18, to be described later, is carried by theusual presser-foot bar 20.

The machine as illustrated` is provided with a thread pull-offcomprising a thread pulling iinger 22 actuated by a movement of a hookedrod 24, but as this mechanism does not form a pa-rt of the presentinvention, being claimed in a co-pendin'g application of same dateherewith, Serial No. 538,086, it need not be described in detail.

Instead of the usual large, latwork table provided with domestic sewingmachines, in the present machine the Work table 26 is made. quite small,as shown in Fig. 2. It is removably held in a casting with its outer`edge (shown at the left and at the bottom in l? ig. 2) in a plane butslightly at one side of the plane of operation "ofthe needle 2.

This change in the'size and location of thework table is to permit it tosupport the two upturned flaps of an insole in suchposition relative tothe stitch forming mechanism as properly to receive a line of stitches.When the insole, is inworlring position its edge flap rests upon thework table, the outei edge of the worlr table extends well into theangle between the outer flap and thefeather, and the channel ilap isengaged by the 'presser foot 18. A portion of an insole in portion ofthe surface of the work available upon which Athe feed foot may operate.To enable the feed foot to operate in the small arealeft for it, it isconsiderably lightened over the feed foot in ordinary use in domesticsewing machines. ln its present form the feed foot comprises a. thinblade (see `Fig. 4) which is adapted to engage the base of the flap ofthe insolewhich rests upon the work table, thereby permitting thestitching to take place near the upper edges of the fiaps as isdesirable for reasons well known to those skilled in the art.

The small area of the work table leaves the thread hook 4 exposed and,owing to the position of the insole in the machine, unless someprotection be provided, the thread hook, in its rotation, is liable toinjure either the marginal portion of the sole by engagement therewithor the hand of the operative who directs the feed of the work throughthe machine. To prevent such injury the thread hook 'is provided with acap or guard 28 Fig. 3). removably supported in the casting 25, whichineloses the upper portion ot the path of movement of the thread hook,

thus effectively housing it aird preventing its coming in contact witheither the work or the operative. When the work is placed in the machinein the position shown in Fig. l, the insole must, be bent or iexedoutwardly in order to clear the mechanism above the work table and thistends to throw the mar- `ginal portion of the insole, extending belowthe work table. inwardto a position where its edge would be engaged bythe rising feed foot, thus interfering with the proper feed of theinsole. To obviate this diliieulty the guard plate 528 over the threadhook is provided with a depending edge plate 30 arranged in a planeoutside of the plane of operation of the feed foot (see Fig. 2). Thisplate provides a bearing .for the feather of the insole and forms a gageto hold the marginal portion ot the insole out of the path of movementof the feed foot (see Fig. l).

.Tn order to maintain the two flaps of the insole in stitch receivingposition during the operation of the stitch formingr mechanism, themachine is also provided with a work positioning device or guidecomprising a roll B2 adapted to bear upon the unchanneled face of theinsole at a point opposite the flaps. This roll isfmounted upon one arm34 of a bell-crank lever which is pivoted at 35 in a bearing locatedupon the machine frame at a point below the Work table. This mounting ofthe work guide provides for an unobstructed space above and in frontofthe work table, thereby permitting the insole readily to be inserted andremoved and also provides for a free and easy manipulation o't' theinsole by the operative during the stitching operation. The guide roll32 is /lield in working position by means of a coiled spring 37 suitablyconnected by its an formed on the casting 25. The rearwardly ends topins upon the bell-crank lever arm 34s and the machine trame. The otherarm 3G, of thc bell-crank lever which supports the work guide, isconnected by means of the well known yoke and sliding block to theforwardly extending arm 38 of a second bellcrank lever pivoted at 39 ina bearing extending arm l0 of this latter bell-'crank lever hasdepending therefrom a chain 42 ,which is connected to any usual orconvenient form of operating treadle (not shown). With thisconstruction, when the treadle is moved in a direction to depress thebell-crank arm et() motion is communicated troni the bell-crank arm 38to the bell-crank arm in a direction to move the guide roll outwardlyinto a position to permit insertion or removal of-tlie work. isreleased, the spring 36 returns the guide roll to its working position.An adjustable stop 33 is provided to limit the inward movement of thebell-crank arm 34 when no work is in the machine so as to avoid injuryto the operating mechanism by an engagement of the guide roll therewith.

As the presser foot 18 must be lifted bet'ore the work can readily beremoved from the machine, means may conveniently be provided -forliftingtlie presser-foot at the time the guide roll 32 is removed fromworking position. To this end a lever 44 is piv- Oted at 39 and isadjustably connected at its rear end in a well known manner (see Fig. l)to the hell-crank arm 40, its forward end extending to a positionbeneath a shoulder 4G (see dotted lines Fig. l) formed on thepresser-foot rod. The lever H is preliminarily adjusted to a position toallow for changes in the position of the guide roll, due to the varyingthickness of the work as it is fed through the machine without anengagement of the lever '14 with the shoulder 40. The space provided forthis purpose, however. though suiiicient to prevent an inopportunelifting of the prcsse1.-ioot7 is not sufficient to prevent the properoperation of the lever 44 when the bell-crank arm 40 is dcpressedbymeans of the treadle.

In order that the machine may operate upon the flaps of insoles havingquite sharp toes, the presser-toot 18 is given a curvature upon a snialradius, in practice about 3/16, and its extremity is beveled at itsinner sidel toward the tip of the foot. The underside or' the end of thefoot 4is also beveled toward its inner edge, for a purpose presently tobe explained. so as to leave an extension or rib 48 (see Fig. 5) at itsouter edge. This rib serves two purposes. c

lt frequently happens that the (inps. and particularly the channell'iap, fall back toward the solo from the 'position attained aiter the'setting operation. The usual flat presser-toot cannot readily obtain agood bearing on a fiap in this condition and has a tendency to slip olfthe tlapfud onto the work table. VUnder ilu-sc conditions there is aconstant tendency for the sole to he forced outward.v against the pres'ure of the guide roll. and oil of the work tz lic. )Vith the under sideof the presser Jfoot beveled as described, an angular entrant edge ispre- )Vlien the treadle 'Iltis Ythe operative until position to receivethe stitches. In turning i asharp toe the pointed end of the t'oot actstoe` below its edge and within the channel before the turn is made. Theend of the t'oot thereafter acts as a wedge to torce an improperly setflap outward awayY Jfrom the sole. The rib t8 is at the same time placedin the channel and acts on the flap as a retainer to prevent the toot atthis time from slipping otf of the channel tl'ap and onto the worktable. The rih t8. also tits well into the shoulder toi-med at the baseot' the channel flap and b v means of the grip thus Vobtained assists inguiding the insole into stitch receiving position. To accomplish thesaine purpose the gage plate 30 is provided at its upper edge. at apoint substantially opposite the presser-foot. with a similar rib 5()(Figs. 2`and B) which engages the shhulder at the hase of the feather.rIhe `ruidevroll 32 and the ribs 4S and 50, just described. act togetherto maintain the insole in proper position during its feed through themachine to receive a line of stitches through the two tlaps.

he presser-toot har 30 is provided at its lower end with a stop (Figs. land having a collar surrounding the presser rod and held in any desiredposition of vertical adjustment by means ot` a clamp screw 53. lVhen nowork is 1n the machine the feed har l2, as it rises during itsfour-motion movement, will engage the stop 52 betore the feed t'oot l0engages the presser-foot 18 and the presser-foot will. therefore, beheld out of contact with the rising feed toot. The adjustment ot"thestop upon the presser-foot bar is such that while the feed toot isprevented from engaging thefpressert'oot when the-machine is ruimingwithout work. it nevertheless does' not prevent a proper feedingengagement of the .feed foot with the work when work is passing throughthe machine. lf the feed foot l0. which, as explained. is quitedelicate, were permitted to engage and litt the presser-foot. as iscustomary. it would he liable to injury.v

The stop 52 ellectually prevents injury to the t`ced toot from thiscause.

The stitching ot' the upturned fiaps starts at one shank and the insoleis ted through the machine automatically, being guided by the. othershank is reached when the guide-roll and presser-foot are withf-lrawnand the insole removed from the machine, With the constructiondescribed. the flaps are immediately and positivelyY secured together bya line ot stitches properly located relatively to the base of the apsand insuring a retention ot both the flaps in upturned position whilethe reim forcing' fabric is being applied and during the .stitching ofthe upper and welt to the insole. a

ln the following claims the term feather is'descriptive of that portionof the margin to engalfe the tla i. at the advance side of the i of theinsole lvin(T beneath the outer one of t t* f3 the two tlapswhich arecut from the substance ot the insole. however the insole is slit or cutto produce such flap.

The nature and scope of the present invention having been indicatediandthe preJ 'ferred anhodiment of the invention having been specificallydescribed.v what is claimed as new is: 'Y

1. A sewing machine for securing together the two contiguous flaps of aninsole having. a channel and a' feather, having, in combination. stitchforming mechanism, a .Work

vtable adapted to engage the outelwtlap and the two contiguoustlaps ofan insole having a channel and a feather, having,'in combination, stitchforming mechanism, a Work table adapted to engage the outer Hap andhaving its outer edge extending intro the` angle between the outer flapand the feather,l

a presser-foot adapted to engage the channel 1 flap'. a work guideobliquely arranged with respect to the surface of the Work table to bear on the unchanneled face of the insole and hold the flaps in stitchreceiving position on thel work table, and a support for the guiderising from lthe machine frame below the work table.

23. A sewing machine t'or securing together the two contiguous iaps ofan insole having a channel and a feather, having, in combination, stitchforming mechanism, a Work table adapted to engage the outer flap andhaving itsl outer edge extending intolthey angle between the outer flapand the feather,

.a presser-.foot adapted to engage the channel Hap, a work guide tobearon the unehanneled bination, stitch forming mechanism, a Work tableadapted to engage the youter Hap-*and having its outer edge extendinginto'It-he 15 in combination, stitch forming mechanism, a

tation of the insole during the stitching oper- .et ihner side towardthe tip of the foot formnoname angle between the outer flap and thefeather,

a presser-foot adapted to engage the chair nel iiap, a work guide tobear on .the unchanneled face of the insole and hold the fiaps institchreceiving position on the work table, a movable support for thework guide fulcrumed at a point below the work table,

a spring to hold the guide in working position, and means under controlof the operative to simultaneously lift the presser-foot and remove theguide from working position.

5. A sewing machine for securing together the two contiguous tiaps of aninsole.l having,

work table, a feed foot operating in front of the outer edge of the worktable, and a work gage arranged in a plane outside of theplane ofoperation of the feed foot to ,"gomaintain the marginal portion of theinsole out of the path of movement of the feed foot.

6. A sewing machine for securing together `the two contiguous flaps ofan insole, havo ing, in combination, a work table adapted to engage oneof the flaps, stitch forming mechanism including a rotary thread hookadjacent the work table, a feed foot operat ing in front of the outeredge of the work table, and a plate extending over the top and dependingover the outer face of the thread hook, said depending portion lying ina plane outside of the path of movement of the feed foot, to protect themarginal poration.

Tr'. sewing machine for securing together the two contiguous flaps of aninsole, having, in combination, stitch forming mechanism,

to a presser foot continually in engagement with the work, a feed footarranged and acting to press the work against the presser foot to gripand feed the work, and a stop mounted on the presser-foot bar adapted ,i4e when no work is in the machine to be enl gaged by the feed foot barbefore the feed i foot reaches a position to engage the pressei`- foot.l 8. A sewing machine for securing to-v oo gether the two contiguousflaps of an insole, having, in combination, stitch forming mechanism, awork table to engage the outer flap, and ay presser-foot to engage thechair nel flap having its extremitv beveled at its 'ing an entrant wedgeto open the channel in advance of the foot and its underside beveledtoward its inner edge.

.9. t 'sewing machine for securing toetlgle'r the two contiguous flapsof an insole, levi-ng, in combination, stitch forming tmechanism, a worktable to engage the outer Eilap, an "a presser-foot to engage thechannelL/fia having its extremity beveled at te. its inner side towardthe tip of the foot forming an entrant wedge to open the channel inadvance'of the foot and provided at its outer edge with a channelengaging rib. it). A sewing machine for securing together the twocontiguous flaps of an insole, having, in combination, stitch formingmechanism, a work table adapted to engage one of the flaps. and a curvedpresser-foot to engage the other iiap provided with a channel shoulderengaging rib at its outer edge to assist in guiding tht` insole intostitch receiving position.

1l. A sewing machine for securing together the two contiguous liaps olan insole, having, in combination, stitch formingmechanism, a work tableadapted to engage one of the flaps, a reSser-foot to engage the otherflap, a rib at the outer edge of the presser foot and a rib cooperatingtherewith to engage the insole material at the buse of the flaps andassist in guiding the insole into stitch receiving position.

12. A sewing machine for securing together the two contiguous llaps ofan insole having a channel and a feather, having, in combination. stitchforming mechanisln. a work table. for supporting the insole b vengagingl the outer flap aud having its` outer edge extending into tlv`angle be tween thc outer iap and the feather, an upwardl \y extendingbell-crank lever fulrrumed below the work table having a guide roll onone arm to bear ou the unchanneled face of the insole and hold the llapsin stitch receiving position on the work table, a second bell-cranklever having one arm operativel)7 connected to the second arm of thefirst lever, and operating means connected to the, free arm of thesecond lever for moving the guide relatively to the work.

13. A sewing machine for securing together the two contiguous flaps ofan insole having ay channel and a feather, having, in

l i combination, stitch fornnng mechanism, a

work support for supportiim,` the insole by engaging the outer flap andhavingl its outer edge extending into the angle between the, outer flapand the feather, a pivotally mounted work guido to bear on theunchanneledface of the insole and hold the llaps in stitch receivingposition on the work support', a lever for actuating said work guide tomove it relatively to the work, a presserfoot, and means connected tosaid actuating lever for lifting the presser-foot at the time the `guide is moved.

lll'. A sewing machine for securing toI gether the two contiguous flapsof an insole having a channel and a feather, having, in combination,stitch forming mechanism, a work support for supporting the insole byengaging the outer flap and having its outer edge extending into theangle between the outer flap and feather, a pivotally mounted workguideto bear on the unchanneled face Loeefive of the insole and hold thelizips in stitch reto a position to vprevent movement of the ceivingposition on the Work support, a lever l presseivfoot during slightmovements ot the i@ for actuating said Work guide to niove it g guide.

relatively to'the Work, a piesser-toot, n ALBERT ,OFNSON presser-footlliting lever connected to said i; y

actuating lever for lifting' the presser-toot Witnesses:

yat the tinie the guide is niovecl, and means RUTH A. SiMoNns,

permitting adjustment of said lifting lever XVARREN G. Osnnn.

Itis hereby certified that in Letters Patent No. LOSQAYS, granted Merci10, 191e, *upon-the application of Albert E. Johnson, of Beverly,'iviesssehnsetts, im improvement in lflnsole-Lip-Sewing Machines, an'error appears in the printed specification requiring correction ssfollows: age 2, line 104, after Word e lett insert the Word,abbreviation, amel numeral, n F279. 1,' etici that the said metterePatent should be read with this correction therein that the same mayeonform to the ILetters Patent No. 1,089,473.

record of the ease in the Patent @iiice signed and sealed this 12th dayof Maj?, A. D., 191i.

[SEAL] J. 'it

Acting @ommelssz'onw Paie Correction in

